diff options
Diffstat (limited to 'clang-tools-extra/cpp11-migrate/Core/FileOverrides.cpp')
-rw-r--r-- | clang-tools-extra/cpp11-migrate/Core/FileOverrides.cpp | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/clang-tools-extra/cpp11-migrate/Core/FileOverrides.cpp b/clang-tools-extra/cpp11-migrate/Core/FileOverrides.cpp deleted file mode 100644 index 7ab7e91c30c..00000000000 --- a/clang-tools-extra/cpp11-migrate/Core/FileOverrides.cpp +++ /dev/null @@ -1,198 +0,0 @@ -//===-- Core/FileOverrides.cpp --------------------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -/// -/// \file -/// \brief This file provides types and functionality for dealing with source -/// and header file content overrides. -/// -//===----------------------------------------------------------------------===// - -#include "Core/FileOverrides.h" -#include "clang/Basic/Diagnostic.h" -#include "clang/Basic/DiagnosticOptions.h" -#include "clang/Basic/SourceManager.h" -#include "clang/Rewrite/Core/Rewriter.h" -#include "clang/Tooling/Tooling.h" -#include "clang/Tooling/ReplacementsYaml.h" -#include "llvm/Support/FileSystem.h" -#include "llvm/Support/Path.h" -#include "llvm/Support/raw_ostream.h" -#include "llvm/Support/system_error.h" -#include <algorithm> - -using namespace clang; -using namespace clang::tooling; - -bool generateReplacementsFileName(const llvm::StringRef MainSourceFile, - llvm::SmallVectorImpl<char> &Result, - llvm::SmallVectorImpl<char> &Error) { - using namespace llvm::sys; - - Error.clear(); - if (llvm::error_code EC = fs::createUniqueFile( - MainSourceFile + "_%%_%%_%%_%%_%%_%%.yaml", Result)) { - Error.append(EC.message().begin(), EC.message().end()); - return false; - } - - return true; -} - -namespace { - -/// \brief Comparator to be able to order tooling::Range based on their offset. -bool rangeLess(clang::tooling::Range A, clang::tooling::Range B) { - if (A.getOffset() == B.getOffset()) - return A.getLength() < B.getLength(); - return A.getOffset() < B.getOffset(); -} - -/// \brief Functor that returns the given range without its overlaps with the -/// replacement given in the constructor. -struct RangeReplacedAdjuster { - RangeReplacedAdjuster(const tooling::Replacement &Replace) - : Replace(Replace.getOffset(), Replace.getLength()), - ReplaceNewSize(Replace.getReplacementText().size()) {} - - tooling::Range operator()(clang::tooling::Range Range) const { - if (!Range.overlapsWith(Replace)) - return Range; - // range inside replacement -> make the range length null - if (Replace.contains(Range)) - return tooling::Range(Range.getOffset(), 0); - // replacement inside range -> resize the range - if (Range.contains(Replace)) { - int Difference = ReplaceNewSize - Replace.getLength(); - return tooling::Range(Range.getOffset(), Range.getLength() + Difference); - } - // beginning of the range replaced -> truncate range beginning - if (Range.getOffset() > Replace.getOffset()) { - unsigned ReplaceEnd = Replace.getOffset() + Replace.getLength(); - unsigned RangeEnd = Range.getOffset() + Range.getLength(); - return tooling::Range(ReplaceEnd, RangeEnd - ReplaceEnd); - } - // end of the range replaced -> truncate range end - if (Range.getOffset() < Replace.getOffset()) - return tooling::Range(Range.getOffset(), - Replace.getOffset() - Range.getOffset()); - llvm_unreachable("conditions not handled properly"); - } - - const tooling::Range Replace; - const unsigned ReplaceNewSize; -}; - -} // end anonymous namespace - -void -ChangedRanges::adjustChangedRanges(const tooling::ReplacementsVec &Replaces) { - // first adjust existing ranges in case they overlap with the replacements - for (ReplacementsVec::const_iterator I = Replaces.begin(), E = Replaces.end(); - I != E; ++I) { - const tooling::Replacement &Replace = *I; - - std::transform(Ranges.begin(), Ranges.end(), Ranges.begin(), - RangeReplacedAdjuster(Replace)); - } - - // then shift existing ranges to reflect the new positions - for (RangeVec::iterator I = Ranges.begin(), E = Ranges.end(); I != E; ++I) { - unsigned ShiftedOffset = - tooling::shiftedCodePosition(Replaces, I->getOffset()); - *I = tooling::Range(ShiftedOffset, I->getLength()); - } - - // then generate the new ranges from the replacements - for (ReplacementsVec::const_iterator I = Replaces.begin(), E = Replaces.end(); - I != E; ++I) { - const tooling::Replacement &R = *I; - unsigned Offset = tooling::shiftedCodePosition(Replaces, R.getOffset()); - unsigned Length = R.getReplacementText().size(); - - Ranges.push_back(tooling::Range(Offset, Length)); - } - - // cleanups unecessary ranges to finish - coalesceRanges(); -} - -void ChangedRanges::coalesceRanges() { - // sort the ranges by offset and then for each group of adjacent/overlapping - // ranges the first one in the group is extended to cover the whole group. - std::sort(Ranges.begin(), Ranges.end(), &rangeLess); - RangeVec::iterator FirstInGroup = Ranges.begin(); - assert(!Ranges.empty() && "unexpected empty vector"); - for (RangeVec::iterator I = Ranges.begin() + 1, E = Ranges.end(); I != E; - ++I) { - unsigned GroupEnd = FirstInGroup->getOffset() + FirstInGroup->getLength(); - - // no contact - if (I->getOffset() > GroupEnd) - FirstInGroup = I; - else { - unsigned GrpBegin = FirstInGroup->getOffset(); - unsigned GrpEnd = std::max(GroupEnd, I->getOffset() + I->getLength()); - *FirstInGroup = tooling::Range(GrpBegin, GrpEnd - GrpBegin); - } - } - - // remove the ranges that are covered by the first member of the group - Ranges.erase(std::unique(Ranges.begin(), Ranges.end(), - std::mem_fun_ref(&Range::contains)), - Ranges.end()); -} - -void FileOverrides::applyOverrides(clang::SourceManager &SM) const { - FileManager &FM = SM.getFileManager(); - - for (FileStateMap::const_iterator I = FileStates.begin(), - E = FileStates.end(); - I != E; ++I) { - SM.overrideFileContents(FM.getFile(I->getKey()), - llvm::MemoryBuffer::getMemBuffer(I->getValue())); - } -} - -void FileOverrides::adjustChangedRanges( - const clang::replace::FileToReplacementsMap &Replaces) { - - for (replace::FileToReplacementsMap::const_iterator I = Replaces.begin(), - E = Replaces.end(); I != E; ++I) { - ChangeTracking[I->getKey()].adjustChangedRanges(I->getValue()); - } -} - -void FileOverrides::updateState(const clang::Rewriter &Rewrites) { - for (Rewriter::const_buffer_iterator BufferI = Rewrites.buffer_begin(), - BufferE = Rewrites.buffer_end(); - BufferI != BufferE; ++BufferI) { - const char *FileName = - Rewrites.getSourceMgr().getFileEntryForID(BufferI->first)->getName(); - const RewriteBuffer &RewriteBuf = BufferI->second; - FileStates[FileName].assign(RewriteBuf.begin(), RewriteBuf.end()); - } -} - -bool FileOverrides::writeToDisk(DiagnosticsEngine &Diagnostics) const { - bool Errors = false; - for (FileStateMap::const_iterator I = FileStates.begin(), - E = FileStates.end(); - I != E; ++I) { - std::string ErrorInfo; - // The extra transform through std::string is to ensure null-termination - // of the filename stored as the key of the StringMap. - llvm::raw_fd_ostream FileStream(I->getKey().str().c_str(), ErrorInfo); - if (!ErrorInfo.empty()) { - llvm::errs() << "Failed to write new state for " << I->getKey() << ".\n"; - Errors = true; - } - FileStream << I->getValue(); - } - return !Errors; -} |